2015 Map of Pinnacle Rocks

About this map

Thunder Basin National Grassland dominates this portion of the high plains along the Converse and Niobrara County line. The landscape is defined by a dense network of intermittent drainage channels including Wagonhound Creek, Cow Creek, and Middle Creek, which carve out numerous named draws such as West Fork Rattlesnake Draw and Archie Draw. These geological features hint at the complex erosion patterns common in the Wyoming basin. Landmark heights like the Miller Hills, Pinnacle Rocks, and Cow Creek Buttes provide significant vertical relief against the surrounding territory. Man-made interventions in this arid environment are evident through water management at the Middle Number 1 Reservoir and the presence of Coal Draw, suggesting the region's historical and ongoing ties to grazing and resource extraction.